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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
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Wireless Earphone Solution

For Long Time Operation with a Small Battery on a Wireless Earphone
Semiconductor Solutions for Air Conditioners

The wireless earphones market is expanding due to improvements in audio delay during gaming and video playback, as the wireless earphones comply with Bluetooth 5.0 and the communication speed increases. Wireless earphones have a built-in battery, but the size of the earphone housing is limited, so the size of the battery also decreases. This tiny battery should drive wireless communications, audio codecs, speakers, hands-free microphones, and even microphones with noise-cancelling function. Not only operating many functions, but also long time operation is required. So it is necessary to save power in electronic circuits and to perform efficient power management. In recent years, a fully isolated type of wireless earphone, called a true wireless earphone, has no cables on either of the left or right earphones, and is the most attractive category. Toshiba's lineup includes LDO regulators designed to realize power supply management for efficient operation of various functions with high functional LSIs with limited battery capacity of wireless earphones, and TVS diodes (ESD protection diodes) designed to protect batteries and internal circuits from power line abnormalities. These products have compact and lightweight package to realize low current consumption and long time operation with a small battery of wireless earphones.

Features

  • Low operating current of power management ICs for system energy savings
  • Compatible with immunity test standards (IEC-61000-4-x) (TVS diodes (ESD protection diodes))
  • Additional functions in a small and light package for reducing board space
  • Useful application notes, reference designs, and other documents on the web save design cycle time

Wireless Earphones

Earphone Case

Other block diagrams

Details of earphone case / Power supply lines (Load switch)
Example of power supply circuit using MOSFET

Application / Wireless Earphone

Details of earphone case / Battery management
Example of power supply monitoring circuit for battery charging and discharging system

Application / Wireless Earphone

Details of earphone case / External connector
Protection circuit example of external connector part

Application / Wireless Earphone

Details of earphone / Battery management
Example of power supply monitoring circuit for battery charging and discharging system

Application / Wireless Earphone

Details of earphone / Power supply circuit
Example of power supply

Application / Wireless Earphone

Details of earphone / Circuit protection
Protection circuit example of internal IC

Application / Wireless Earphone

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Smart Speaker Solution
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Contribute to Energy Saving and Stable Operation by Improving Power Supply Performance and Protective Functions
SSD Solution
Towards achievement compact size, high reliability and long life
Smartwatch Solution
To Realize More Features, Longer Operating Time and Smaller Size
Cordless Power Tool Solution
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